#! /usr/bin/env node
import createHash from "./browserify";
import { createReadStream } from "fs";
var argv = process.argv.slice(2);
function pipe(algorithm, s) {
    var start = Date.now();
    var hash = createHash(algorithm || 'sha1');
    s.on('data', function (data) {
        hash.update(data);
    });
    s.on('end', function () {
        if (process.env.DEBUG) {
            return console.log(hash.digest('hex'), Date.now() - start);
        }
        console.log(hash.digest('hex'));
    });
}
function usage() {
    console.error('sha.js [algorithm=sha1] [filename] # hash filename with algorithm');
    console.error('input | sha.js [algorithm=sha1]    # hash stdin with algorithm');
    console.error('sha.js --help                      # display this message');
}
if (!process.stdin.isTTY) {
    pipe(argv[0], process.stdin);
}
else if (argv.length) {
    if (/--help|-h/.test(argv[0])) {
        usage();
    }
    else {
        var filename = argv.pop();
        var algorithm = argv.pop();
        pipe(algorithm, { createReadStream }.createReadStream(filename));
    }
}
else {
    usage();
}
